Stochastic switching between multistable oscillation patterns of the Min-system
The spatiotemporal oscillation patterns of the proteins MinD and MinE are used by the bacterium E. coli to sense its own geometry. Strikingly, both computer simulations and experiments have recently shown that for the same geometry of the reaction volume, different oscillation patterns can be stable...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
27 September 2016
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| In: |
New journal of physics
Year: 2016, Jahrgang: 18, Heft: 9 |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/18/9/093049 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1088/1367-2630/18/9/093049 Verlag, kostenfrei, Volltext: http://stacks.iop.org/1367-2630/18/i=9/a=093049 
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| Verfasserangaben: | Artemij Amiranashvili, Nikolas D. Schnellbächer and Ulrich S. Schwarz |
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| 520 | |a The spatiotemporal oscillation patterns of the proteins MinD and MinE are used by the bacterium E. coli to sense its own geometry. Strikingly, both computer simulations and experiments have recently shown that for the same geometry of the reaction volume, different oscillation patterns can be stable, with stochastic switching between them. Here we use particle-based Brownian dynamics simulations to predict the relative frequency of different oscillation patterns over a large range of three-dimensional compartment geometries, in excellent agreement with experimental results. Fourier analyses as well as pattern recognition algorithms are used to automatically identify the different oscillation patterns and the switching rates between them. We also identify novel oscillation patterns in three-dimensional compartments with membrane-covered walls and identify a linear relation between the bound Min-protein densities and the volume-to-surface ratio. In general, our work shows how geometry sensing is limited by multistability and stochastic fluctuations. | ||
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